Figure 3.

The 16S rRNA gene sequence-based phylogenetic analysis of Fusobacteria within the intestinal microbiotas of zebrafish and other fishes. Maximum likelihood tree showing the phylogenetic relationship between Fusobacteria 16S rRNA gene sequences from uncultured and cultured bacteria derived from the intestinal contents of zebrafish (red text) and other teleost fishes (blue text), and those from other sources available in the public databases (black text). Branches representing multiple identical sequences are indicated with the number of sequences in parentheses. Bootstrap support (⩾50%) is shown as results from 1000 bootstrap replicates. The scale bar indicates 0.05% estimated sequence divergence.